Answer:
38.5sqft
Step-by-step explanation:
If we have the 2 shorter sides of a right triangle, we can compute the area as:
A = ab/2
A = 7ft * 11ft / 2 = 77sqft/2 = 38.5sqft
This would be easy if you made more sense out of the question.
Answer:
f⁻¹(x) = 2x - 8
f⁻¹(4) = 2 × 4 - 8
f⁻¹(4) = 0
Step-by-step explanation:

Let's test it

So we do indeed have the inverse function, so using that we can plug in the values requested:
f⁻¹(x) = 2x - 8
f⁻¹(4) = 2 × 4 - 8
f⁻¹(4) = 0
Slope is equal to rise over run. For this question we use 0-6=-6 as the numerator and 9-7=2 as the denominator, thus the slope is -6/2=-3